he admits that in the last four years, that's the obama years, the middle class has been buried. highest price of gasoline in the history. hits the middle class. the unemployment rate hits the middle class. the debt being piled up, hits the middle class. but then he goes on to say something which is frankly nutty. no republican is proposing a tax increase in the middle class. none, zero. there are no proposals to raise taxes on the middle class. who is proposing to raise taxes? obama? who has a whole range of tax increases in obamacare? obam a. biden pivots and charges the republicans with something totally false, after having atd mitted that in the time he was vice-president, the middle class was buried. i agree with paul ryan's characterization. buried by tax, buried by unemployment and buried by reg iewdle, it's buried by debt and a variety of government actions, under obama and biden. i am sure that he wishes he hadn't said it. but joe biden in that case, was sharing an insight into what's happened. >> greta: two-part question. what is the one question president obama doesn't